Dns Error Unable To Resolve Host Name
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Unable To Resolve Dns Name Of Domain Controller
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Communicator Was Unable To Resolve The Dns Hostname Of The Login Server
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Lync Was Unable To Resolve The Dns Hostname Of The Login Server
run sudo: unable to resolve host (none) up vote 326 down vote favorite 83 I have this issue on AWS on some servers. Whenever I run sudo the terminal is stuck doing seemingly nothing, until it finally spits out this error message. My terminal looks like this: ubuntu@(none):~$ sudo true sudo: unable to resolve host (none) What can I do to solve it? sudo error-handling share|improve this question edited Apr 13 '14 at 5:18 lync was unable to resolve the dns hostname of the login server sipexternal Radu Rădeanu 77.9k24170256 asked Aug 31 '11 at 19:09 Kit Sunde 2,23151423 1 Please post the contents of /etc/hostname and /etc/hosts. –arrange Aug 31 '11 at 20:24 23 I recommend against closing this question as too localized. There are many users who may mistakenly think they've put one name in their hosts file but put in a different name instead, especially since on many networks, computers are similarly named. This question (and answer) would show up when someone searches with that problem, and the answer would prompt them to check for such discrepancies, even though the exact misspelling would be different. –Eliah Kagan Aug 18 '12 at 11:09 5 make sure your hostname same with hosts. e.g. the hostname is ubuntu-pc and hosts is ubuntu-pc must be same. –Muhammad Sholihin Apr 1 '13 at 8:17 add a comment| 19 Answers 19 active oldest votes up vote 447 down vote accepted Two things to check (assuming your machine is called my-machine, you can change this as appropriate): That the /etc/hostname file contains just the name of the machine. That /etc/hosts has an entry for localhost. It should have something like: 127.0.0.1 localhost.localdomain localhost 127.0.1.1 my-machine If either of these files aren't correct (since you can't sudo), you may have to reboot the machine into recovery m
have one accepted answer. Are you sure you want to replace the current answer with this one? Yes, I'm sure. Changed your ventrilo unable to resolve host name mind? You previously marked this answer as accepted. Are you sure you unable to resolve host name in android want to unaccept it? Yes, I'm sure. Sign Up Log In submit Tutorials Questions Projects Meetups Main unable to resolve hostname ubuntu Site logo-horizontal DigitalOcean Community Menu Tutorials Questions Projects Meetups Main Site Sign Up Log In submit View All Results By: nguyen.h.khanh Subscribe Subscribed Share 0 sudo: unable to resolve host http://askubuntu.com/questions/59458/error-message-when-i-run-sudo-unable-to-resolve-host-none [hostname] March 17, 2014 30.4k views Hi there, I just created my first droplet today. I added an user and give it root privileges. Whenever I "sudo", I get "unable to resolve host [myhostname]". Although my command is executed fine, I still want to get rid of this? Belows are my /etc/hostname and /etc/hosts knguyen@knguyen:~$ cat /etc/hostname knguyen knguyen@knguyen:~$ https://www.digitalocean.com/community/questions/sudo-unable-to-resolve-host-hostname cat /etc/hosts 127.0.0.1 localhost ::1 localhost ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters Log In to Comment Leave a Comment Add comments here to get more clarity or context around a question. To answer a question, use the “Answer” field below. Log In to Comment 3 Answers 1 akennedy2292 March 17, 2014 This thread helped me: http://askubuntu.com/questions/59458/unable-to-resolve-host-none Reply Log In to Comment 0 nguyen.h.khanh March 18, 2014 Thanks, I got it now. Reply Log In to Comment 0 Aspmon November 4, 2014 You may add your domain name to your /etc/hosts like this knguyen@knguyen:~$ cat /etc/hosts 127.0.0.1 knguyen Reply Log In to Comment Have another answer? Share your knowledge. Log In to Answer Copyright © 2016 DigitalOcean™ Inc. Community Tutorials Questions Projects Tags Newsletter RSS Distros & One-Click Apps Terms, Privacy, & Copyright Security Report a Bug Get Paid to Write Almost there! Sign into your account, or create a new one, to start interacting. Log In Sign Up Report a Bug Use this form to report bugs related to the Community
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of http://unix.stackexchange.com/questions/64641/unable-to-resolve-hostname-how-to-cleanly-change-hostname-without-rebooting this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Unix & Linux Questions Tags Users Badges Unanswered Ask Question _ Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute: Sign up Here's how unable to it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top “Unable to resolve hostname” - how to cleanly change hostname without rebooting up vote 7 down vote favorite 1 At work, I work on a small website using Ubuntu servers hosted on Amazon EC2 instances. We have two webservers, and at any given time unable to resolve one of them is 'live' and one is 'testing', but when we've got our new features or bugfixes working on the 'testing' server, we run a script that uses the AWS API to swap the IP addresses assigned to the two boxes so that the domains being served by the two servers are swapped. Consequently, at any given moment, one of these servers can be either our 'live' server or our 'testing' server, but these are not permanent states. To avoid confusion when SSHing into either of these servers, especially if some silly person (like me) leaves an SSH session open for a long time and gets confused about which server they're on, I want to modify the hostnames of the two servers so that the prompt and title in the terminal window will read ubuntu@ourwebsiteLIVE or ubuntu@ourwebsiteTESTING depending upon whether the server is currently live or testing. I know I can do this by running hostname ourwebsiteLIVE etc. in our IP-swapping script, and have already implemented this. It works, but now every time I sudo anything on either of our servers it prints e.g. sudo: unable to resolve host ourwebsiteLIVE which